What you don't know won't hurt you then right? lol.
Guess it depends if you pump water or wort (sugar) through it.
I would be concerned if your pump is being used for chilling/whirl-pooling just before fermentation.
But if you pump boiling wort through right before then you are ok.
I agree, cleaning the pump should not need to be done after every session.
My steel head had some black build up on the propellers. I used to just run water through it to clean it.
The Rip Tide had rust from some very small metal imperfections in the SS part. I call them and had it replaced under warranty. The replacement part is perfect. The Riptide is so easy to take apart so if pumping wort, I will probably clean it more frequently as I am now making NEIPAs and use it for whirl-pooling hop additions and chilling.
But this is a What's Brewing channel so
Tap Left - Mosaic Promise Clone
Center Tap - Stout - Nice and Chewy recipe that I got from sneezles61 (Awesome)
Right Tap - Vienna IPA - inspired by Dark Horse Crooked Tree IPA
Keezer: (need to dry hop both batches this weekend, then they enter the Keezer)
Ryecoe IPA Clone
Rye DIPA - 2nd half of 10 gallon batch where I added more Corn Sugar and a ton of hops (my evil beer, >100 IBU)